Air chuck



FIG. 1 is a top plan view of an ornamental design for an air chuck of the present invention;

FIG. 2 is a front view of an ornamental design for an air chuck of the present invention;

FIG. 3 is a right side view of an ornamental design for an air chuck of the present invention;

FIG. 4 is a rear view of an ornamental design for an air chuck of the present invention;

FIG. 5 is a left side view of an ornamental design for an air chuck of the present invention;

FIG. 6 is a bottom plan view of an ornamental design for an air chuck of the present invention;

FIG. 7 is a right side isometric view of an ornamental design for an air chuck of the present invention; and,

FIG. 8 is a left side isometric view of an ornamental design for an air chuck of the present invention. 

CLAIM The ornamental design for an air chuck, as shown and described. 